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Modules</h2></td></tr>
<tr class="memitem:d5/d51/group__features2d__main"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d5/d51/group__features2d__main.html">Feature Detection and Description</a></td></tr>
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<tr class="memitem:d4/d5d/group__features2d__draw"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d5d/group__features2d__draw.html">Drawing Function of Keypoints and Matches</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d0/d9e/structcv_1_1Accumulator.html">cv::Accumulator&lt; T &gt;</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d3/d2d/structcv_1_1Accumulator_3_01char_01_4.html">cv::Accumulator&lt; char &gt;</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d8/dcf/structcv_1_1Accumulator_3_01short_01_4.html">cv::Accumulator&lt; short &gt;</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d89/structcv_1_1Accumulator_3_01unsigned_01char_01_4.html">cv::Accumulator&lt; unsigned char &gt;</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d9/d84/structcv_1_1Accumulator_3_01unsigned_01short_01_4.html">cv::Accumulator&lt; unsigned short &gt;</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d0/d13/classcv_1_1Feature2D.html">cv::Feature2D</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Abstract base class for 2D image feature detectors and descriptor extractors.  <a href="../../d0/d13/classcv_1_1Feature2D.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../de/db2/classcv_1_1KeyPointsFilter.html">cv::KeyPointsFilter</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">A class filters a vector of keypoints.  <a href="../../de/db2/classcv_1_1KeyPointsFilter.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d7f/structcv_1_1L1.html">cv::L1&lt; T &gt;</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../dc/daa/structcv_1_1L2.html">cv::L2&lt; T &gt;</a></td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:gadd5cf7c76865f14468cfdd9cc08eb990"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="../../d0/d13/classcv_1_1Feature2D.html">Feature2D</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gadd5cf7c76865f14468cfdd9cc08eb990">cv::DescriptorExtractor</a></td></tr>
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<tr class="memitem:ga15e1361bda978d83a2bea629b32dfd3c"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="../../d0/d13/classcv_1_1Feature2D.html">Feature2D</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#ga15e1361bda978d83a2bea629b32dfd3c">cv::FeatureDetector</a></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:gaa7cacd54220a6da4ee05748a0329b754"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gaa7cacd54220a6da4ee05748a0329b754">cv::computeRecallPrecisionCurve</a> (const std::vector&lt; std::vector&lt; <a class="el" href="../../d4/de0/classcv_1_1DMatch.html">DMatch</a> &gt; &gt; &amp;matches1to2, const std::vector&lt; std::vector&lt; <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> &gt; &gt; &amp;correctMatches1to2Mask, std::vector&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">Point2f</a> &gt; &amp;recallPrecisionCurve)</td></tr>
<tr class="separator:gaa7cacd54220a6da4ee05748a0329b754"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac78532caa0ee7744ab370c9a479ec397"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gac78532caa0ee7744ab370c9a479ec397">cv::evaluateFeatureDetector</a> (const <a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> &amp;img1, const <a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> &amp;img2, const <a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> &amp;H1to2, std::vector&lt; <a class="el" href="../../d2/d29/classcv_1_1KeyPoint.html">KeyPoint</a> &gt; *keypoints1, std::vector&lt; <a class="el" href="../../d2/d29/classcv_1_1KeyPoint.html">KeyPoint</a> &gt; *keypoints2, float &amp;repeatability, int &amp;correspCount, const <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; <a class="el" href="../../da/d9b/group__features2d.html#ga15e1361bda978d83a2bea629b32dfd3c">FeatureDetector</a> &gt; &amp;fdetector=<a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; <a class="el" href="../../da/d9b/group__features2d.html#ga15e1361bda978d83a2bea629b32dfd3c">FeatureDetector</a> &gt;())</td></tr>
<tr class="separator:gac78532caa0ee7744ab370c9a479ec397"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaa6bb3152a8df4830386b79517158bca1"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#gaa6bb3152a8df4830386b79517158bca1">cv::getNearestPoint</a> (const std::vector&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">Point2f</a> &gt; &amp;recallPrecisionCurve, float l_precision)</td></tr>
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<tr class="memitem:ga79f47b975249c2f936804ea0c9a64518"><td class="memItemLeft" align="right" valign="top">float&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../da/d9b/group__features2d.html#ga79f47b975249c2f936804ea0c9a64518">cv::getRecall</a> (const std::vector&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">Point2f</a> &gt; &amp;recallPrecisionCurve, float l_precision)</td></tr>
<tr class="separator:ga79f47b975249c2f936804ea0c9a64518"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="gadd5cf7c76865f14468cfdd9cc08eb990"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gadd5cf7c76865f14468cfdd9cc08eb990">&#9670;&nbsp;</a></span>DescriptorExtractor</h2>

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        <tr>
          <td class="memname">typedef <a class="el" href="../../d0/d13/classcv_1_1Feature2D.html">Feature2D</a> <a class="el" href="../../da/d9b/group__features2d.html#gadd5cf7c76865f14468cfdd9cc08eb990">cv::DescriptorExtractor</a></td>
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<p><code>#include &lt;<a class="el" href="../../d5/d0d/features2d_8hpp.html">opencv2/features2d.hpp</a>&gt;</code></p>
<p>Extractors of keypoint descriptors in OpenCV have wrappers with a common interface that enables you to easily switch between different algorithms solving the same problem. This section is devoted to computing descriptors represented as vectors in a multidimensional space. All objects that implement the vector descriptor extractors inherit the DescriptorExtractor interface. </p>

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<a id="ga15e1361bda978d83a2bea629b32dfd3c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga15e1361bda978d83a2bea629b32dfd3c">&#9670;&nbsp;</a></span>FeatureDetector</h2>

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      <table class="memname">
        <tr>
          <td class="memname">typedef <a class="el" href="../../d0/d13/classcv_1_1Feature2D.html">Feature2D</a> <a class="el" href="../../da/d9b/group__features2d.html#ga15e1361bda978d83a2bea629b32dfd3c">cv::FeatureDetector</a></td>
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</div><div class="memdoc">

<p><code>#include &lt;<a class="el" href="../../d5/d0d/features2d_8hpp.html">opencv2/features2d.hpp</a>&gt;</code></p>
<p>Feature detectors in OpenCV have wrappers with a common interface that enables you to easily switch between different algorithms solving the same problem. All objects that implement keypoint detectors inherit the FeatureDetector interface. </p>

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<h2 class="groupheader">Function Documentation</h2>
<a id="gaa7cacd54220a6da4ee05748a0329b754"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa7cacd54220a6da4ee05748a0329b754">&#9670;&nbsp;</a></span>computeRecallPrecisionCurve()</h2>

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          <td class="memname">void cv::computeRecallPrecisionCurve </td>
          <td>(</td>
          <td class="paramtype">const std::vector&lt; std::vector&lt; <a class="el" href="../../d4/de0/classcv_1_1DMatch.html">DMatch</a> &gt; &gt; &amp;&#160;</td>
          <td class="paramname"><em>matches1to2</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const std::vector&lt; std::vector&lt; <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> &gt; &gt; &amp;&#160;</td>
          <td class="paramname"><em>correctMatches1to2Mask</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">std::vector&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">Point2f</a> &gt; &amp;&#160;</td>
          <td class="paramname"><em>recallPrecisionCurve</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p><code>#include &lt;<a class="el" href="../../d5/d0d/features2d_8hpp.html">opencv2/features2d.hpp</a>&gt;</code></p>

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<a id="gac78532caa0ee7744ab370c9a479ec397"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gac78532caa0ee7744ab370c9a479ec397">&#9670;&nbsp;</a></span>evaluateFeatureDetector()</h2>

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          <td class="memname">void cv::evaluateFeatureDetector </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> &amp;&#160;</td>
          <td class="paramname"><em>img1</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> &amp;&#160;</td>
          <td class="paramname"><em>img2</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="../../d3/d63/classcv_1_1Mat.html">Mat</a> &amp;&#160;</td>
          <td class="paramname"><em>H1to2</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">std::vector&lt; <a class="el" href="../../d2/d29/classcv_1_1KeyPoint.html">KeyPoint</a> &gt; *&#160;</td>
          <td class="paramname"><em>keypoints1</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">std::vector&lt; <a class="el" href="../../d2/d29/classcv_1_1KeyPoint.html">KeyPoint</a> &gt; *&#160;</td>
          <td class="paramname"><em>keypoints2</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float &amp;&#160;</td>
          <td class="paramname"><em>repeatability</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int &amp;&#160;</td>
          <td class="paramname"><em>correspCount</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt; <a class="el" href="../../da/d9b/group__features2d.html#ga15e1361bda978d83a2bea629b32dfd3c">FeatureDetector</a> &gt; &amp;&#160;</td>
          <td class="paramname"><em>fdetector</em> = <code><a class="el" href="../../dc/d84/group__core__basic.html#ga6395ca871a678020c4a31fadf7e8cc63">Ptr</a>&lt;&#160;<a class="el" href="../../da/d9b/group__features2d.html#ga15e1361bda978d83a2bea629b32dfd3c">FeatureDetector</a>&#160;&gt;()</code>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p><code>#include &lt;<a class="el" href="../../d5/d0d/features2d_8hpp.html">opencv2/features2d.hpp</a>&gt;</code></p>

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<h2 class="memtitle"><span class="permalink"><a href="#gaa6bb3152a8df4830386b79517158bca1">&#9670;&nbsp;</a></span>getNearestPoint()</h2>

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          <td class="memname">int cv::getNearestPoint </td>
          <td>(</td>
          <td class="paramtype">const std::vector&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">Point2f</a> &gt; &amp;&#160;</td>
          <td class="paramname"><em>recallPrecisionCurve</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">float&#160;</td>
          <td class="paramname"><em>l_precision</em>&#160;</td>
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          <td>)</td>
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<p><code>#include &lt;<a class="el" href="../../d5/d0d/features2d_8hpp.html">opencv2/features2d.hpp</a>&gt;</code></p>

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<h2 class="memtitle"><span class="permalink"><a href="#ga79f47b975249c2f936804ea0c9a64518">&#9670;&nbsp;</a></span>getRecall()</h2>

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          <td class="memname">float cv::getRecall </td>
          <td>(</td>
          <td class="paramtype">const std::vector&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">Point2f</a> &gt; &amp;&#160;</td>
          <td class="paramname"><em>recallPrecisionCurve</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">float&#160;</td>
          <td class="paramname"><em>l_precision</em>&#160;</td>
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          <td>)</td>
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<p><code>#include &lt;<a class="el" href="../../d5/d0d/features2d_8hpp.html">opencv2/features2d.hpp</a>&gt;</code></p>

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